Having now just watched K's post-game press conference last night, he mentioned, independently and not in response to a question from the media (IIRC), that he was very pleased with how the team played the last five seconds of overtime. He mentioned as well that they had employed this strategy down at Florida St. Clearly a considered decision (all three times), but I would be fascinated to hear him elaborate on his thinking about the subject.
What K did not say (but what I think Dean Smith would have said, if the roles been reversed) is that his team play six, maybe even six-and-a-half, seconds of great defense before fouling Nate Britt intentionally.
"Amazing what a minute can do."